IPv6 Static Routing

49 soru

Soru 41Soru

Fill in the blank with the exact Cisco IOS command needed to configure the specified static route.

Aşağıdaki boşlukları doldurun

To configure a fully specified IPv6 static route for the destination subnet 2001:db8:acad:1::/64 using the outbound interface GigabitEthernet0/1 and the next-hop link-local address fe80::1, enter the command:
Cevabı ve açıklamayı göster

Cevap

ipv6 route 2001:db8:acad:1::/64 GigabitEthernet0/1 fe80::1
When specifying an IPv6 link-local address as the next-hop, Cisco IOS requires a fully specified static route where both the local outbound interface and the neighbor's link-local IPv6 address are declared.

Adım Adım Çözüm

1
Identify the target network prefix and length.
Destination network prefix is 2001:db8:acad:1::/64.
Static routing in IPv6 requires specifying the target prefix alongside its prefix length.
2
Determine the interface and next-hop address requirement for link-local routing.
Exit interface is GigabitEthernet0/1 and link-local next-hop address is fe80::1.
Because link-local addresses (fe80::/10) are only unique to a local link, Cisco IOS requires specifying the exit interface along with the link-local next-hop address to form a fully specified static route.
3
Assemble the complete global configuration mode command syntax.
ipv6 route 2001:db8:acad:1::/64 GigabitEthernet0/1 fe80::1
The correct command syntax in Cisco IOS is 'ipv6 route <prefix/length> <exit-interface> <next-hop-link-local-address>'.

Anahtar Kavram

IPv6 Fully Specified Static Route Syntax
Soru 42Soru

An administrator must create a static route on a Cisco router for destination prefix 2001:db8:fed::/642001:\text{db8}:\text{fed}::/64. The next-hop router's link-local address is fe80::2\text{fe80}::2, reached via local interface GigabitEthernet0/1, and the route must be configured with an administrative distance of 110. Which Cisco IOS command correctly completes this configuration?

Cevabı ve açıklamayı göster

Cevap: ipv6 route 2001:db8:fed::/64 GigabitEthernet0/1 fe80::2 110

Cevap

ipv6 route 2001:db8:fed::/64 GigabitEthernet0/1 fe80::2 110
The correct command follows the exact Cisco IOS syntax for a fully specified IPv6 static route: 'ipv6 route <destination-prefix/mask> <exit-interface> <next-hop-link-local-address> [administrative-distance]'.

Adım Adım Çözüm

1
Identify the proper global configuration command prefix for IPv6 static routing.
Use 'ipv6 route' rather than IPv4's 'ip route'.
Cisco IOS separates IPv4 and IPv6 routing table management commands.
2
Evaluate link-local next-hop address rules in Cisco IOS IPv6 static routes.
When a link-local address (fe80::/10) is used as the next hop, the local exit interface (GigabitEthernet0/1) MUST also be specified (fully specified static route).
Link-local addresses are valid only on the local link and are shared across multiple interfaces, creating ambiguity if an exit interface is not designated.
3
Append the optional Administrative Distance (AD) value to the end of the command.
Place '110' at the end of the command string.
Setting an explicit AD overrides the default static route administrative distance of 1.

Anahtar Kavram

Fully specified IPv6 static route command syntax requiring an exit interface when using a link-local next-hop address.
Tahmini Süre:1m 15s
Soru 43Soru

A network engineer is configuring IPv6 static routes on a Cisco router to forward traffic to the destination network 2001:db8:acad:10::/642001:\text{db8}:\text{acad}:10::/64. The primary path must use the neighbor's link-local address fe80::2\text{fe80}::2 via the local exit interface GigabitEthernet0/0/1. A secondary floating static route must use the global unicast next-hop address 2001:db8:acad:3::22001:\text{db8}:\text{acad}:3::2 with an administrative distance of 130. Which two commands must be configured on the router?

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: ipv6 route 2001:db8:acad:10::/64 gigabitethernet0/0/1 fe80::2; ipv6 route 2001:db8:acad:10::/64 2001:db8:acad:3::2 130

Cevap

The two correct commands are the fully specified static route using interface GigabitEthernet0/0/1 with link-local next-hop fe80::2, and the static route specifying next-hop 2001:db8:acad:3::2 with administrative distance 130.
The command specifying GigabitEthernet0/0/1 alongside fe80::2 correctly formats a fully specified IPv6 static route using a link-local next-hop address. The command specifying 2001:db8:acad:3::2 followed by 130 correctly configures a floating static route with an administrative distance of 130.

Adım Adım Çözüm

1
Identify the mandatory syntax requirement for IPv6 static routes using link-local next-hop addresses.
Link-local addresses (fe80::/10) are non-routable and ambiguous without a specific local interface identifier. Therefore, the command must include the local exit interface alongside the link-local next-hop address.
Cisco IOS requires a fully specified route format whenever a link-local address serves as the next hop.
2
Evaluate the administrative distance configuration for the backup floating static route.
The backup route uses global unicast next-hop 2001:db8:acad:3::2 and requires an administrative distance higher than the primary route (default AD = 1), so 130 must be appended to the command.
Floating static routes remain inactive in the routing table until the primary route fails, which occurs only if their administrative distance is higher than the primary route's AD.

Anahtar Kavram

IPv6 Static Route Command Syntax and Floating Static Route AD Configuration
Soru 44Soru

A network engineer is configuring static routes on a Cisco IOS router to forward traffic to remote IPv6 networks. Which TWO statements accurately describe the requirements and behavior of IPv6 static route configurations? (Select TWO.)

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: When specifying an IPv6 link-local address as the next-hop address, the local exit interface MUST also be specified in the command.; To configure a floating static IPv6 backup route, the administrative distance value must be set higher than the administrative distance of the primary route.

Cevap

The correct statements are: specifying the local exit interface is mandatory when using a link-local next-hop address, and configuring a floating static route requires an administrative distance higher than the primary route.
In Cisco IOS IPv6 static routing, link-local next-hop addresses require the specifying of the local exit interface because link-local addresses are ambient to the specific interface link. Furthermore, creating a backup (floating) static route requires setting an administrative distance value strictly higher than the primary route so it remains inactive until the primary path fails.

Adım Adım Çözüm

1
Analyze link-local next-hop requirements
Link-local addresses are non-routable outside their local segment, making the exit interface mandatory for path identification.
Without specifying the exit interface, the router cannot determine which local link connects to the link-local neighbor.
2
Analyze floating static route administrative distance mechanics
Setting a higher administrative distance keeps the static route out of the routing table until the primary route drops.
Lower administrative distance routes are preferred by the Cisco IOS routing table logic.

Anahtar Kavram

IPv6 Static Route Next-Hop Types and Administrative Distance Configuration
Soru 45Soru

A network administrator is configuring a static route on a Cisco router using a link-local address (fe80::2) as the next hop to reach the remote network 2001:db8:10:20::/64. The local egress interface is GigabitEthernet0/0/1. Which Cisco IOS command correctly configures this route?

Cevabı ve açıklamayı göster

Cevap: ipv6 route 2001:db8:10:20::/64 GigabitEthernet0/0/1 fe80::2

Cevap

The correct command is 'ipv6 route 2001:db8:10:20::/64 GigabitEthernet0/0/1 fe80::2'.
When configuring an IPv6 static route using a link-local next-hop address, Cisco IOS requires a fully specified static route where the local exit interface (GigabitEthernet0/0/1) is provided prior to the next-hop IPv6 address (fe80::2).

Adım Adım Çözüm

1
Identify the global configuration command syntax for IPv6 static routing.
The command structure must start with 'ipv6 route' followed by destination-prefix/prefix-length.
IPv6 static routes in Cisco IOS require the 'ipv6 route' keyword.
2
Determine the formatting requirements for link-local next-hop addresses.
Because link-local addresses (FE80::/10) are reused across multiple links, the router requires a fully specified route that includes the local exit interface before the link-local next-hop address.
Without specifying the exit interface, Cisco IOS rejects the link-local next hop as ambiguous.

Anahtar Kavram

Fully Specified IPv6 Static Routes using Link-Local Next-Hop Addresses
Soru 46Soru

An engineer is configuring a fully specified IPv6 static route on a Cisco router to forward traffic destined for 2001:db8:abc:33::/642001:\text{db8}:\text{abc}:33::/64. What local interface keyword completes the command syntax when using the next-hop link-local address fe80::cafe\text{fe80}::\text{cafe} via interface GigabitEthernet0/0/2?

Aşağıdaki boşlukları doldurun

Router(config)# ipv6 route 2001:db8:abc:33::/64 fe80::cafe
Cevabı ve açıklamayı göster

Cevap

GigabitEthernet0/0/2 (or Gi0/0/2)
When configuring an IPv6 static route with a link-local next-hop address, Cisco IOS requires the local exit interface (GigabitEthernet0/0/2) to precede the link-local IPv6 address. Without the exit interface, the router cannot determine which local link reaches the specified link-local address.

Adım Adım Çözüm

1
Identify the mandatory components of a link-local IPv6 static route in Cisco IOS.
When a link-local address (FE80::/10) is specified as the next hop, Cisco IOS requires the local exit interface to be included preceding the next-hop address.
Link-local addresses are non-routable and exist independently on every link, making them ambiguous without specifying the outbound local interface.
2
Complete the command syntax.
The proper command structure is 'ipv6 route <destination-prefix/prefix-length> <exit-interface> <link-local-address>'. Inserting GigabitEthernet0/0/2 into {{blank_1}} correctly specifies the route.
This provides both interface scope and next-hop link-local identification.

Anahtar Kavram

Fully specified IPv6 static routes with link-local next hops
Soru 47Soru

A network administrator needs to create a static route on router R1 to reach remote subnet 2001:db8:100:50::/642001:\text{db8}:100:50::/64. The administrator decides to specify the next-hop router R2 using R2's link-local address fe80::20c:29ff:fe01:a1b2fe80::20c:29ff:fe01:a1b2 across R1's outbound GigabitEthernet 0/0/1 interface. Which Cisco IOS command correctly configures this IPv6 static route?

Cevabı ve açıklamayı göster

Cevap: ipv6 route 2001:db8:100:50::/64 GigabitEthernet0/0/1 fe80::20c:29ff:fe01:a1b2

Cevap

The command 'ipv6 route 2001:db8:100:50::/64 GigabitEthernet0/0/1 fe80::20c:29ff:fe01:a1b2' correctly configures the fully specified IPv6 static route.
The correct command uses the 'ipv6 route' keyword followed by the target destination network prefix (2001:db8:100:50::/642001:\text{db8}:100:50::/64), the local egress interface (GigabitEthernet0/0/1), and the link-local address of the adjacent router (fe80::20c:29ff:fe01:a1b2fe80::20c:29ff:fe01:a1b2). Because link-local addresses are valid only on their local segment, including the local exit interface is mandatory.

Adım Adım Çözüm

1
Identify the proper command prefix for IPv6 static routing.
The command must begin with 'ipv6 route'.
Cisco IOS separates IPv4 ('ip route') and IPv6 ('ipv6 route') static configuration commands.
2
Evaluate next-hop requirements when using link-local addresses.
Both the exit interface and the link-local next-hop IPv6 address must be specified.
Link-local addresses (fe80::/10) are local to a specific link. Without specifying the exit interface, the router cannot determine which physical segment the link-local address belongs to.
3
Verify command syntax order.
Syntax: 'ipv6 route <destination-prefix/prefix-length> <exit-interface> <link-local-address>'.
This fully specified static route syntax satisfies all Cisco IOS requirements for link-local next-hops.

Anahtar Kavram

IPv6 Fully Specified Static Routing with Link-Local Next-Hop
Soru 48Soru

A network administrator must configure a static route on router R1 to reach the destination subnet 2001:db8:acad:10::/642001:\text{db8}:\text{acad}:10::/64. The administrator intends to use the link-local address fe80::2:1\text{fe80}::2:1 of the adjacent router as the next hop via R1's local exit interface GigabitEthernet0/0/1. Which Cisco IOS command accurately achieves this configuration?

Cevabı ve açıklamayı göster

Cevap: ipv6 route 2001:db8:acad:10::/64 GigabitEthernet0/0/1 fe80::2:1

Cevap

The correct command is 'ipv6 route 2001:db8:acad:10::/64 GigabitEthernet0/0/1 fe80::2:1'.
The command specifying both the exit interface GigabitEthernet0/0/1 and the link-local address fe80::2:1 is correct. In Cisco IOS, whenever a link-local address is designated as the next hop, the local outbound interface MUST also be specified (creating a fully specified static route) because link-local addresses are only unique within the scope of a single link.

Adım Adım Çözüm

1
Identify the basic command syntax for IPv6 static routing in Cisco IOS.
The general structure is 'ipv6 route <destination-prefix/prefix-length> {next-hop-address | exit-interface} [next-hop-address]'.
This establishes the order of arguments required by Cisco IOS.
2
Evaluate the requirement of using a link-local address (FE80::/10) as the next hop.
Link-local addresses are non-global and exist only on a single link. The router must know which physical/logical interface leads to that link-local address.
Without specifying the local exit interface, the router cannot resolve which egress interface connects to the specified link-local address.
3
Construct the fully specified IPv6 static route command.
Combine the destination network '2001:db8:acad:10::/64', the local exit interface 'GigabitEthernet0/0/1', and the next-hop link-local address 'fe80::2:1'.
This forms the complete and syntactically correct command 'ipv6 route 2001:db8:acad:10::/64 GigabitEthernet0/0/1 fe80::2:1'.

Anahtar Kavram

IPv6 Static Routing with Link-Local Next-Hop
Soru 49Soru

An engineer needs to configure two IPv6 static routes on a Cisco IOS router:
1. A static route to reach the remote network 2001:db8:3c0d:1::/642001:\text{db8}:3\text{c0d}:1::/64 using the link-local address fe80::1\text{fe80}::1 of the adjacent router connected via interface GigabitEthernet0/0/1\text{GigabitEthernet0/0/1}.
2. A backup (floating) default static route via the global unicast next-hop address 2001:db8:acad:f::12001:\text{db8}:\text{acad}:\text{f}::1 with an Administrative Distance of 130130.

Which TWO IPv6 static route commands correctly fulfill these requirements?

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: ipv6 route 2001:db8:3c0d:1::/64 GigabitEthernet0/0/1 fe80::1; ipv6 route ::/0 2001:db8:acad:f::1 130

Cevap

The two correct command statements are 'ipv6 route 2001:db8:3c0d:1::/64 GigabitEthernet0/0/1 fe80::1' and 'ipv6 route ::/0 2001:db8:acad:f::1 130'.
The correct command for the specific subnet prefix using a link-local address explicitly provides both the exit interface and the link-local address. The correct backup default route uses '::/0' with an administrative distance of 130, ensuring it functions as a floating static route.

Adım Adım Çözüm

1
Analyze link-local next-hop syntax requirements
Link-local addresses (fe80::/10) are non-routable outside the local link. Therefore, Cisco IOS requires the exit interface parameter when using a link-local next-hop (e.g., 'GigabitEthernet0/0/1 fe80::1').
Without the exit interface, the router cannot determine which outgoing interface leads to that link-local neighbor.
2
Identify default route prefix and floating static AD requirements
The IPv6 default route prefix is '::/0'. To make it floating/backup, its administrative distance must be set higher than the primary routing source (in this case, 130).
An AD of 130 ensures the route remains inactive in the routing table until primary routes with lower AD values fail.

Anahtar Kavram

IPv6 Static Route Syntax & Link-Local Next-Hop Requirements
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